Black and white sexual pairings, therefore, became a widespread phenomenon that originated from a demographic imbalance, but expanded and developed through a cultural fetishization of women of color. The islands, built upon complex systems of violence and sexual control, promoted and legitimated interracial relationships. Caribbean visitors certainly held this impression. Pierre McCallum emphasized the importance of finding a lover of color in Trinidad: "On the arrival of the European, his first object is, to look out for a mistress, either of the black, yellow, or livid kind." "As for the native creole," McCallum continued, "a female companion is provided for him from among the slaves of the family, at an early age, to prevent his going astray to increase the stock of his neighbours." McCallum's account indicates the ubiquity of West Indian miscegenation, its role as a measure of status, and its sanction by all members of society, including relatives. Not only did family members support such behavior, but they promoted it within a plantation endogamy to increase further slave holdings – albeit enslaved kin. Such descriptions reveal a West Indian system perfectly at ease with interracial pairings, if not encouraging of them. This sexual tolerance dramatically grew the islands' population of color...

...The culture of miscegenation that developed in the British West Indies came from demographic conditions, as well as customary promotions of common practice. Although white men grossly outnumbered white women in most Caribbean islands, white families still survived. Indeed, white islanders' seemingly universal engagement with women of color belied actual gender imbalances within their populations. Cross-racial relations became a part of West Indian culture; married and single men alike had their mistresses of color. For imperial observers, this confirmed long-standing associations between the West Indies and anarchic morality. The mistress of color, so often portrayed in travel accounts and expositions, visibly embodied island vice. British commentary condemned her, her lover, and West Indian society as a whole. The men in these relationships were, after all, not simply colonial "others," but friends and relatives of Britons back home.

The African-American grandmother of a friend of mine once summed up the laws that govern black identity in this country. “If you ever want to know if someone’s black or not,” she would say, “go ask their white neighbor.”

That succinct, small-town Georgia wisdom essentially outlines the rule of hypodescent, also known as the one-drop rule. The one-drop rule emerged during slavery and hardened in Reconstruction, automatically classifying as black anyone with any trace of African ancestry. It is the reason why, in the 1800s, the extremely light-skinned offspring of white fathers and black mothers were deemed slaves. It’s also the reason why, in 2011, the actress Halle Berry, who is biracial but identifies as black, became a lightning rod of controversy for maintaining that her own daughter, with white Canadian actor Gabriel Aubry, is also black.

The fact that Americans with vastly different complexions know they are black by the number of cab drivers who don’t stop for them as much as by any internal measure is a dilemma on many levels. But for Kim Tallbear, an enrolled member of South Dakota’s Sisseton-Wahpeton Oyate tribe and a UC Berkeley professor who studies race, genomics and Native American identity, the tyranny of the one-drop rule poses a specific problem in the ongoing controversy surrounding US Senate candidate Elizabeth Warren and her shifting, dubious claims of Native American identity…

…â€śIf you want to understand Native American identity,â€ť Tallbear said, â€śyou need to get outside of that binary, one-drop framework. Native Americans do not fit in that binary. We have been racialized very differently in relationship to whites.â€ť

How do we know Native Americans are racialized differently, Tallbear said? Because a white personâ€”say, Elizabeth Warren, for exampleâ€”can absorb a Native American ancestor and still maintain an identity as white. If Warren had a black ancestor, that fact would threaten her white identity…